Commensalism

Ronin went over to his dorm room right after the first day of classes with a sigh.

Not because of the tiring experiences he had before, but the tiring experience that will happen later.

And soon enough, it came. While he was reading a rune book he borrowed from the library, the door opened.

Don entered with a scowl on his face, and did not greet him.

Ronin did not look up from his book, and just flipped the pages. He was the one to greet. "Welcome to our dorm room."

There had always been an extra wardrobe and bed since this was the room that Maellan and Zeuxis shared. And now it was the younger pair of siblings sharing it.

Don went to his wardrobe closet, and found a pair of nightwear to change into. He silently went to the bathing room to get changed.

But before he could open the door, Ronin spoke again.

"I thought you promised not to be upset with me."

"I am not." Don lied. "I'm just tired, and I want to get off this binding on my chest quickly."